DE69125757T2 - Encryption with selective announcement of the protocol identifiers - Google Patents

Encryption with selective announcement of the protocol identifiers

Info

Publication number
DE69125757T2
DE69125757T2 DE69125757T DE69125757T DE69125757T2 DE 69125757 T2 DE69125757 T2 DE 69125757T2 DE 69125757 T DE69125757 T DE 69125757T DE 69125757 T DE69125757 T DE 69125757T DE 69125757 T2 DE69125757 T2 DE 69125757T2
Authority
DE
Germany
Prior art keywords
encryption
protocol identifiers
announcement
selective
selective announcement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69125757T
Other languages
German (de)
Other versions
DE69125757D1 (en
Inventor
Amar Gupta
Charles W Kaufman
G Paul Koning
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Equipment Corp
Original Assignee
Digital Equipment Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Equipment Corp filed Critical Digital Equipment Corp
Application granted granted Critical
Publication of DE69125757D1 publication Critical patent/DE69125757D1/en
Publication of DE69125757T2 publication Critical patent/DE69125757T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00—Encapsulation of packets
DE69125757T 1990-06-29 1991-06-24 Encryption with selective announcement of the protocol identifiers Expired - Fee Related DE69125757T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/546,615 US5086469A (en) 1990-06-29 1990-06-29 Encryption with selective disclosure of protocol identifiers

Publications (2)

Publication Number Publication Date
DE69125757D1 DE69125757D1 (en) 1997-05-28
DE69125757T2 true DE69125757T2 (en) 1997-12-18

Family

ID=24181222

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69125757T Expired - Fee Related DE69125757T2 (en) 1990-06-29 1991-06-24 Encryption with selective announcement of the protocol identifiers

Country Status (4)

Country Link
US (1) US5086469A (en)
EP (1) EP0464563B1 (en)
CA (1) CA2045931C (en)
DE (1) DE69125757T2 (en)

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US5822436A (en) 1996-04-25 1998-10-13 Digimarc Corporation Photographic products and methods employing embedded information
US6122403A (en) 1995-07-27 2000-09-19 Digimarc Corporation Computer system linked by using information in data objects
US7171016B1 (en) 1993-11-18 2007-01-30 Digimarc Corporation Method for monitoring internet dissemination of image, video and/or audio files
US5841978A (en) 1993-11-18 1998-11-24 Digimarc Corporation Network linking method using steganographically embedded data objects
US6408082B1 (en) 1996-04-25 2002-06-18 Digimarc Corporation Watermark detection using a fourier mellin transform
USRE40919E1 (en) * 1993-11-18 2009-09-22 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data
US6424725B1 (en) 1996-05-16 2002-07-23 Digimarc Corporation Determining transformations of media signals with embedded code signals
US6516079B1 (en) 2000-02-14 2003-02-04 Digimarc Corporation Digital watermark screening and detecting strategies
US6614914B1 (en) 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader
US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US5862260A (en) * 1993-11-18 1999-01-19 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data
US7044395B1 (en) 1993-11-18 2006-05-16 Digimarc Corporation Embedding and reading imperceptible codes on objects
US6968057B2 (en) * 1994-03-17 2005-11-22 Digimarc Corporation Emulsion products and imagery employing steganography
US7039214B2 (en) * 1999-11-05 2006-05-02 Digimarc Corporation Embedding watermark components during separate printing stages
US6869023B2 (en) * 2002-02-12 2005-03-22 Digimarc Corporation Linking documents through digital watermarking
US5550984A (en) * 1994-12-07 1996-08-27 Matsushita Electric Corporation Of America Security system for preventing unauthorized communications between networks by translating communications received in ip protocol to non-ip protocol to remove address and routing services information
US5764918A (en) * 1995-01-23 1998-06-09 Poulter; Vernon C. Communications node for transmitting data files over telephone networks
US6760463B2 (en) 1995-05-08 2004-07-06 Digimarc Corporation Watermarking methods and media
US7486799B2 (en) * 1995-05-08 2009-02-03 Digimarc Corporation Methods for monitoring audio and images on the internet
US6408331B1 (en) * 1995-07-27 2002-06-18 Digimarc Corporation Computer linking methods using encoded graphics
US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
US5757924A (en) * 1995-09-18 1998-05-26 Digital Secured Networks Techolognies, Inc. Network security device which performs MAC address translation without affecting the IP address
EP0779727B1 (en) * 1995-12-08 2005-10-12 Nippon Telegraph And Telephone Corporation Communication method and system with packet scrambling
AU2242697A (en) * 1996-01-16 1997-08-11 Raptor Systems, Inc. Data encryption/decryption for network communication
US5826018A (en) * 1996-04-02 1998-10-20 Hewlett-Packard Company Method and appparatus for automatically determining the starting location and starting protocol of LAN data in a WAN link frame
US6381341B1 (en) 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal
JP3446482B2 (en) * 1996-06-28 2003-09-16 三菱電機株式会社 Encryption device
US5805594A (en) * 1996-08-23 1998-09-08 International Business Machines Corporation Activation sequence for a network router
IL130774A0 (en) 1997-01-03 2001-01-28 Fortress Technologies Inc Improved network security device
US6704866B1 (en) * 1997-07-11 2004-03-09 Cisco Technology, Inc. Compression and encryption protocol for controlling data flow in a network
US6389532B1 (en) * 1998-04-20 2002-05-14 Sun Microsystems, Inc. Method and apparatus for using digital signatures to filter packets in a network
US20030037235A1 (en) * 1998-08-19 2003-02-20 Sun Microsystems, Inc. System for signatureless transmission and reception of data packets between computer networks
JP3259724B2 (en) * 1999-11-26 2002-02-25 三菱電機株式会社 Cryptographic device, encryptor and decryptor
EP1458211A1 (en) * 1999-12-27 2004-09-15 Mitsubishi Denki Kabushiki Kaisha Radio communication device
US7063264B2 (en) * 2001-12-24 2006-06-20 Digimarc Corporation Covert variable information on identification documents and methods of making same
ATE509326T1 (en) 2001-12-18 2011-05-15 L 1 Secure Credentialing Inc MULTIPLE IMAGE SECURITY FEATURES FOR IDENTIFYING DOCUMENTS AND METHOD FOR PRODUCING THEM
US7694887B2 (en) * 2001-12-24 2010-04-13 L-1 Secure Credentialing, Inc. Optically variable personalized indicia for identification documents
US7793846B2 (en) * 2001-12-24 2010-09-14 L-1 Secure Credentialing, Inc. Systems, compositions, and methods for full color laser engraving of ID documents
US7728048B2 (en) * 2002-12-20 2010-06-01 L-1 Secure Credentialing, Inc. Increasing thermal conductivity of host polymer used with laser engraving methods and compositions
US7824029B2 (en) 2002-05-10 2010-11-02 L-1 Secure Credentialing, Inc. Identification card printer-assembler for over the counter card issuing
JP2004015141A (en) * 2002-06-04 2004-01-15 Fuji Xerox Co Ltd System and method for transmitting data
US7804982B2 (en) 2002-11-26 2010-09-28 L-1 Secure Credentialing, Inc. Systems and methods for managing and detecting fraud in image databases used with identification documents
US7712673B2 (en) 2002-12-18 2010-05-11 L-L Secure Credentialing, Inc. Identification document with three dimensional image of bearer
EP1614064B1 (en) 2003-04-16 2010-12-08 L-1 Secure Credentialing, Inc. Three dimensional data storage
US7610627B1 (en) * 2004-01-23 2009-10-27 Acxiom Corporation Secure data exchange technique
US7744002B2 (en) * 2004-03-11 2010-06-29 L-1 Secure Credentialing, Inc. Tamper evident adhesive and identification document including same
US7571319B2 (en) * 2004-10-14 2009-08-04 Microsoft Corporation Validating inbound messages
US20060236124A1 (en) * 2005-04-19 2006-10-19 International Business Machines Corporation Method and apparatus for determining whether to encrypt outbound traffic
CN1897590B (en) * 2005-07-15 2010-10-27 华为技术有限公司 Message transmitting method and device based on DUA protocol
US8301771B2 (en) * 2005-10-26 2012-10-30 Armstrong, Quinton Co. LLC Methods, systems, and computer program products for transmission control of sensitive application-layer data
US8539221B2 (en) * 2009-03-27 2013-09-17 Guavus, Inc. Method and system for identifying an application type of encrypted traffic
US11876786B2 (en) * 2016-12-08 2024-01-16 Comcast Cable Communications, Llc Protocol obfuscation in moving target defense
CN109842604A (en) * 2017-11-28 2019-06-04 中天安泰（北京）信息技术有限公司 Communication downlink data reconstruction method and component
CN109842595A (en) * 2017-11-28 2019-06-04 中天安泰（北京）信息技术有限公司 Prevent the method and device of network attack

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122213A (en) * 1975-03-03 1978-10-24 Tokyo Shibaura Electric Company, Limited Method for metallizing a phosphor screen for a cathode ray tube
US5001755A (en) * 1988-04-19 1991-03-19 Vindicator Corporation Security system network

Also Published As

Publication number Publication date
EP0464563A2 (en) 1992-01-08
CA2045931A1 (en) 1991-12-30
CA2045931C (en) 1994-03-29
EP0464563B1 (en) 1997-04-23
DE69125757D1 (en) 1997-05-28
US5086469A (en) 1992-02-04
EP0464563A3 (en) 1992-11-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee